Anybody else having these issues with Froyo?

So I've browsed a few forums and Google for a while now about my issues.

One of which other people have and that's the lag, but resetting the phone doesn't help. The other is the screen not being responsive at all which I think is related to the next problem. There's a ghost writing things for me, which is not helpful. I watched on a live background the screen thinking something is touching it many times in about 3 or 4 different locations, usually not all at once. I have tried a few different roms thinking it may just be a bad rom or flash but it happens to all of them mere seconds after flashing. I have yet to try the stock 2.2 rom but I have tried a few roms based off of it. I also thought it may be related to heat but most of the time my phone is room temperature, then I thought it may be an application acting up so I tried a stripped rom and it still happens. Any thoughts as to whats going on? Should I just get a refurb phone with 2.2 already on it?

Thanks